Part 3: The Vibrating String

1. Nuclear Physics: Put a Quark In it By Chelsea Sidrane Part 3: The Vibrating String Mentor: Dr. Richard Jones

2. GlueX The goal of GlueX is to study the concept of confinement in those particles that display some degree of gluonic freedom; hybrid mesons. UConn Mentor Connection 2010, Chelsea Sidrane

3. Our Part Of the many components that went into constructing the GlueX setup, we worked on the photon source, specifically, the mount for the crystal radiator UConn Mentor Connection 2010, Chelsea Sidrane

4. Mounting the Radiator • Diamond mounted on • carbon fibers • Goal • Avoid low energy • background bremsstrahlung UConn Mentor Connection 2010, Chelsea Sidrane

5. The Principles Behind Our Experiment: Ensuring Radiator Stability • Vibrating Wire • Crystal radiator must be stable • Must be finely tunable to create Coherent Bremsstrahlung • Resonance- • a system’s tendency to vibrate with a larger amplitude at certain frequencies • Constructive intereference UConn Mentor Connection 2010, Chelsea Sidrane

6. Weighting the Wire Tension (T) Tension (T) drop of glue Wires assumed massless L/2 L/2 M Length (L) Making Measurements -resonance frequency of carbon fibers -increased mass lowers resonant frequencies Angular Frequency UConn Mentor Connection 2010, Chelsea Sidrane

7. Weighting the Wire: Theory V. Data • Theoretical Data estimated to find resonant curve *Enlarged view* Peak of Resonance Curve is maximum resonant frequency UConn Mentor Connection 2010, Chelsea Sidrane

8. Conclusion • The Standard Model and the origin of particle physics • The GlueX experiment • Our work on the radiator mount UConn Mentor Connection 2010, Chelsea Sidrane

9. Acknowledgements • Dr. Jones • Professor Mannhiem • Brendan Pratt • Chris Pelletier • Igor Senderovich • George Rawitscher Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! Thanks! UConn Mentor Connection 2010, Chelsea Sidrane